题目内容

boarding gate

A. 安检通道
B. 机场门口
C. 绿色通道
D. 登机口

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F stands for _______

A. first class
B. business class
C. economy class

C stands for _________

A. first class
B. business class
C. economy class

Y stands for _________

A. first class
B. business class
C. economy class

In 15C, the number 15 represents ________

A. the row
B. the column
C. the lucky number
D. the time

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